The problem started about 2 months ago when the speedometer stoped working. We ended up finding out the gear had broke so I put a new one in and that on gave out after 5 days the third one had lasted ...

I swapped a 4r70w transmission from a 2004 expedition out of a wrecking yard into my nieces 2002 f150. Now the speedometer is reading way off, like 100mph at about 25-30 mph. I have done some research...

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